Storage bin



FIG. 1 is a top perspective view of a storage bin showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a front elevation thereof; the rear, left and right side elevations being a mirror image. 

The ornamental design for a storage bin, as shown and described. 